The word "re-tire" means to change or replace worn-out tires with new ones. Its antonyms are words that mean the opposite or the complete absence of this action. Some of the antonyms for "re-tire" are to continue, persevere, persist, maintain, renew, and restore. To continue means to carry on or keep going without stopping or changing direction. Persevere implies continued effort or persistence in the face of difficulties or hardship. Persist means to continue to exist or to make repeated or steadfast efforts towards a goal. Another antonym, renew, means to make something new or bring something back to life. Finally, restore means to repair, fix or make something functional again after it has been damaged or destroyed.